Jacket for retorts



(No Model.)

" W. L. TETBR. JACKET FOR RBTORTS.

` No. 499,056. Patented June 6, 1893.

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Y A* il |31 UNITED Y STATES PATENT OFFICE.

WILLIAM L. TETER, OF PHILADELPHIA, PENNSYLVANIA.

JACKET FOR RETORTS.

SPECIFICATION forming part of Letters Patent No. 499,056, dated June 6, 1893.

Application led January 28, 1892- Renewed February 18, 1893. Seria1No.462.925. (No model.)

To all whom, t may concern.:

Be it known that I, WILLIAM L. TETER, a citizen of the United States, residing at Phi1adelpliia, in the county of Philadelphia and State of Pennsylvania, have invented certain new and useful Improvements in Jackets for Retorts, of which the following is a specification, reference being had therein to the accompanying drawings.

My invention has reference to the tubes or pipes of gas generating retorts and it consists in certain novel features hereinafter fully described and claimed.

Experience has demonstrated that Wrought iron pipes, when subjected to intense heat will warp and twist out of shape and will open at the seams, becoming worthless in avery short time. Cast iron pipes when used for the same purpose crack and break in consequence of the necessaryintroduction of water and steam at a temperature lower than that of the retort. In order to overcome these obj ections and disadvantages I construct the retort pipes of a central wrought iron tube and acastiron jacket inclosing the same, the said jacket being cast or formed on the wrought iron tube.

In the annexed drawings Figure 1 is a side elevation of the furnace or retort. Fig. 2 is a detail view showing the Wrought iron tube in elevation and the cast iron jacket in section. Fig. 3 is a plan view of the jacket, retort and distribution pipes.

His the oil tank and M the feed pipe thereof.

K is the pipe conveying the oil from the tank I-I to the injector B3 and .I is a pipe couveying steam from the ordinary steam chest to the said injector.

L is a pipe which guides the commingled oil and steam to the retorts, pipes or tubes. The tubes or pipes E are formed of Wrought iron and are covered by the cast iron jackets F which are cast over and onto the said tubes or pipes so as to form practically one solid pipe therewith or a cast iron pipe having a wrought iron lining. The cast-iron. jacket, while permitting to some extent, the conduction of heat, prevents destruction of the pipes of the retort by the intense heat to which, if exposed, they would be subjected. The malleable fittings or joints, O, of the retort tubes or pipes are incased in a wall or brick work as shown at W, Figs. 2 and 3.

A designates the usual grate bars and B a series of perforated pipes which receive the gas from the retort tubes through the pipes C and B2 and diffuse it beneath the grate bars.

From the foregoing description, it will be seen that I have provided a retort tube which will not Warp or twist under the action of the heat and will not crack or break under the action of the steam or water. The joints are incased in a brick work so that they will not be affected by the heat and will not separate.

I-Iaving thus fully described my invention, what I claim, and desire to secure by Letters Patent, is-

In a retort for generating gas, a retort pipe consisting of a wrought iron tube and a cast iron jacket cast over and to the said tube.

In testimony whereof I ax my signature in the presence of two witnesses.

WILLIAM L. TETER.

Witnesses:

THOMAS F. GRoss, WM. WATSON. 

